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Finding the Fourth Proportional to 70,923.32, 106,434.12 and 45,901.07

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Solution

The fourth proportional to 70,923.32, 106,434.12 and 45,901.07 is: 68,883.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,923.32 : 106,434.12 = 45,901.07 : x
  2. Step 2: Convert to fraction form
    70,923.32/106,434.12 = 45,901.07/x
  3. Step 3: Cross multiply
    70,923.32x = 106,434.12 × 45,901.07
  4. Step 4: Simplify right side
    70,923.32x = 4,885,439,992.51
  5. Step 5: Solve for x
    x = 4,885,439,992.51/70,923.32
  6. Step 6: Final answer
    x = 68,883.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.